Otolith taxa Ray-finned fish research • A study on the development of teeth of a stem ray-finned fish specimen from the Devonian
Gneudna Formation (
Australia), providing evidence of similarities with the organization of lungfish tooth plates, is published by Chen (2025). • Igielman et al. (2025) study the anatomy of lower jaws of Devonian ray-finned fishes, report evidence of overall similarity in similarity in gross shape and composition, but also report evidence of differences that might be related to a previously unrecognized functional diversity. • Flannery Sutherland et al. (2025) interpret the fossil record of early ray-finned fishes as suggestive of their cryptic diversification in the Late Devonian instead of an explosive radiation in the Carboniferous, as well as suggestive of high lineage survivorship across the
Hangenberg event. • Wilson, Mansky & Anderson (2025) describe occipital ossifications of two ray-finned fishes from the
Tournaisian Horton Bluff Formation (
Nova Scotia,
Canada), and report similarities of one of the studied specimens to early-diverging Devonian ray-finned fishes, as well as similarities of the other specimen to later, Carboniferous taxa, providing new information on diversity of ray-finned fishes from the Horton Bluff Formation. • Mo, Caron & Coates (2025) revise
Rhadinichthys ornatissimus and reinterpret
Woodichthys bearsdeni as a species belonging to the genus
Rhadinichthys. •
Giles, Kolmann & Friedman (2025) describe a specimen of
Platysomus parvulus from the Carboniferous
Pennine Middle Coal Measures Formation (Staffordshire, England, United Kingdom) preserving evidence of presence of enlarged
basibranchial tooth plates opposing an upper tooth field including small, pointed teeth on the surface of the
vomer and longitudinal bands of teeth on the
entopterygoids, representing the earliest record of a tongue-bite mechanism in a ray-finned fish reported to date. • A study on the composition of the ray-finned fish assemblages from Permian localities in the
Nizhny Novgorod Oblast (
Russia) is published by Karaseva & Bakaev (2025). • A study on the evolution of ray-finned fish assemblages known from the Permian and Triassic strata of the
Kuznetsk Basin (Russia) is published by Bakaev & Karaseva (2025). • Redescription of
Palaeoniscum delessei is published by Gonçalves & Luccisano (2025), who synonymise this species to
Aeduella blainvillei. • Gonçalves & Luccisano (2025) redescribe all the
aeduellid specimens from the
Decazeville Basin (
Aveyron,
France), and carry out a phylogenetic analysis of this family including the other actinopterygians of the
Permo-
Carboniferous of
Europe. They highlight that the aeduellids present in the Decazeville Basin are
Aeduella blainvillei and
Decazella vetteri. • Redescription and a study on the phylogenetic affinities of
Pteronisculus gunnari is published by Cavicchini et al. (2025). • Romanov, Shakhparonov & Korzun (2025) study the force distribution in the skull of
Pteronisculus to determine the function of its
symplectic bone, and report possible evidence of presence of a mouth-opening mechanism different from those seen in extant bony fishes. • Cooper et al. (2025) study the skull roof anatomy of
Gyrosteus mirabilis, and interpret both
G. mirabilis and
Strongylosteus hindenburgi as species distinct from
Chondrosteus acipenseroides. • Miyata et al. (2025) describe fossil material of a
sturgeon from the
Maastrichtian Hakobuchi Formation (
Japan), representing the first record of a sturgeon from the Upper Cretaceous strata in East Asia. • Stack (2025) studies the phylogenetic relationships of extant and extinct ray-finned fishes, and recovers
bobasatraniids and
guildayichthyids as placed outside
Neopterygii. • Capasso & Witzmann (2025) identify pycnodontomorph specimens with supernumerary rays of dorsal and anal fins, and interpret the studied anomalies as likely atavisms and as evidence supporting the interpretation of pycnodontomorph as
basal neopterygians. • A study on the morphological variation of dentary bones of members of Gyrodontiformes and Pycnodontiformes is published by Capasso, Zorzin & Duffin (2025). • Fossil material of
Eomesodon sp., representing the oldest record of pycnodonts from
Gondwana reported to date, is described from the Middle Jurassic (
Bajocian)
Jaisalmer Formation (
India) by Ghosh, Kumar & Swami (2025). • Pacheco-Ordaz, Reyes-López & Alvarado-Ortega (2025) identify a specimen of
Paranursallia gutturosa from the Turonian strata from the San José de Gracia Quarry (
Mexico), assign further
nursalliine pycnodontid specimens from the
Agua Nueva Formation to the same species, and discard report of the presence of
Nursallia tethyensis in the Turonian strata of the Huehuetla Quarry. • Fossil material of
cf. Coelodus sp., representing the first vertebrate material reported from the
Santonian Jákó Marl Formation (
Hungary), is described by Szabó, Haas & Cawley (2025). • Tintori (2025) reports the discovery of fossil material of
Thoracopterus wushaensis (otherwise known from the Xingyi Fauna from southwestern China) from the Ladinian strata from the Pelsa/Vazzoler fossil site (
Sciliar Formation, Italy). • Brinkman et al. (2025) study the composition of the ray-finned fish assemblage from the
Turonian Bissekty Formation (
Uzbekistan), reporting evidence of presence of basal neopterygians and
teleosts (mostly members of early-diverging lineages, but also a
characiform and an
acanthomorph) and evidence of differences in composition between the studied assemblage and earlier
Cenomanian assemblages from
Laurasia, and link the reported differences to climate changes and intercontinental dispersal events. • Gardner, Brinkman & Murray (2025) identify the
holotype of
Arotus hieroglyphus as a scale of a
holostean fish. • Hunt & Lucas (2025) describe a
regurgitalite from the Upper Jurassic
Morrison Formation in Utah, United States (preserving amphibian bones and likely produced by an amioid fish), and name new ichnotaxon
Purgotybaris fosteri. • Redescription and a study on the affinities of
Guizhoubrachysomus minor, interpreted as a
basal dapediid, is published by Xu et al. (2025). • A study on the anatomy and affinities of
"Semionotus" manselii is published by Ebert & Etches (2025), who transfer this species to the genus
Brachyichthys. • Ribeiro-Souza et al. (2025) revise ganoid scales from the
Alcântara Formation (
Brazil), and interpret the studied fossil material as belonging to at least three lepisosteiform taxa. • Ganoid scales probably representing the oldest fossil material of
Lepisosteus reported from Southern Hemisphere are described from the Albian–Cenomanian
Açu Formation (Brazil) by Costa et al. (2025). • Gar remains representing the first record of this group from the Late Cretaceous of
Japan are described from the
Turonian Mifune Group by Ikegami, Yabumoto & Brito (2025). • Ebert & Kölbl-Ebert (2025) identify teleost and crustacean remains within gastrointestinal tracts attached to fossil material of
Aspidorhynchus from the Upper Jurassic strata in Germany preserving fossils of animals from the
Solnhofen Archipelago. • Miyazato et al. (2025) describe two partial
aspidorhynchid skulls from the Upper Cretaceous
Dinosaur Park Formation (Alberta, Canada), providing new information on the anatomy of the skulls of members of the group (including the braincase and the sensory canals), interpreted as indicating that aspidorhynchids were unlikely to be teleosts. • A study on the scale histology of
Pachycormus is published by Maxwell & Cooper (2025). • Fossil material of the oldest
hypsocormine pachycormid reported to date is described from the
Toarcian Posidonia Shale (
Germany) by Cooper & Maxwell (2025). • Kanarkina, Zverkov & Popov (2025) identify fin fragments of members of the genus
Bonnerichthys from the Campanian strata of the
Rybushka Formation (
Saratov Oblast,
Russia), representing the first record of fossils of this genus outside the
United States. • Ebert & Kölbl-Ebert (2025) report the discovery of specimens of
Tharsis from the Upper Jurassic strata of the Plattenkalk basins of Eichstätt or Solnhofen Basin (
Germany) found with belemnites lodged in their mouth and gill apparatus, and interpret the studied specimens as sucking remnants of belemnite soft tissue of algal or bacterial overgrowth and accidentally sucking belemnites into their mouth, resulting in suffocation. • Evidence of variation of morphology of the
gastrointestinal tract of teleosts from the
Barremian La Huérguina Formation (
Spain) is presented by San Román, Marugán Lobón & Martín-Abad (2025). • Brinkman et al. (2025) compare the composition of teleost assemblages from the Maastrichtian
Hell Creek Formation and from the Paleocene
Fort Union Formation (
Montana, United States) and
Ravenscrag Formation (
Saskatchewan, Canada), and find that the
Cretaceous–Paleogene extinction event mainly affected taxa that were already rare in the Maastrichtian, but also find evidence of reduced taxonomic richness of teleosts during the early Paleocene. • Serafini et al. (2025) identify a
plethodid rostrum from the Upper Cretaceous (Campanian-Maastrichtian) strata from northern
Italy, preserving evidence of presence of cranial and dental traits
convergent with those of extant billfishes. • A study on fossil melanin in an eye of a probable specimen of
Dastilbe crandalli from the
Crato Formation (
Brazil), providing evidence of high density but low diversity of melanosomes from the
retinal pigment epithelium which might be indicative of limited visual capabilities of the studied fish, is published by Prado et al. (2025). • Redescription and a study on the affinities of
Plesioschizothorax macrocephalus is published by Yang et al. (2025). • Přikryl et al. (2025) describe fossil material of
Luciobarbus graellsii from the Pliocene strata from the Camp dels Ninots site (
Spain), and interpret the studied fossils as indicating that the species was able to adapt to environmental changes from the warmest period of the Pliocene to the coldest period of the Pleistocene. • Murray, Brinkman &
Krause (2025) identify fossil material of at least three
acanthomorph (probably
percomorph) taxa from the
Maastrichtian strata in the Mahajanga Basin (
Madagascar), interpreted as likely evidence of a single invasion of Madagascan fresh waters during the Cretaceous. • Khalloufi et al. (2025) describe new fossil material of
Phosphichthys thomasi from the Eocene strata of the Oulad Abdoun Basin (Morocco), providing new information on the anatomy of the studied species, and interpret
Phosphichthys as an acanthomorph of uncertain affinities. • Carnevale & Bannikov (2025) redescribe
Protorhamphosus parvulus, and confirm its placement within
Syngnathoidei and are unable to determine its exact phylogenetic affinities within this group. • Schwarzhans & Bannikov (2025) report the first discovery of a specimen of
Pinichthys shirvanensis from the Miocene strata of the North Shirvanskaya Formation (
Krasnodar Krai,
Russia) preserved with an otolith, and transfer the otolith-based taxon
"Stromateus" steurbauti Schwarzhans (1994) to the genus
Pinichthys. • Revision of Oligocene
palaeorhynchids from
Romania is published by Grădianu, Monsch & Baciu (2025). • Chanet (2025) revises the anatomy and affinities of the Miocene
scaldfish Arnoglossus sauvagei. • A study on changes of morphology of teeth of
haplochromine cichlids in Lake Victoria during the last 17,000 years, providing evidence of rapid morphological diversification during the first three millennia of the radiation (even before the definitive establishment of modern deep lake conditions), is published by Ngoepe et al. (2025) . • Redescription of
Zignoichthys oblongus, based on data from new fossil material from the Pesciara site of the
Bolca locality (
Italy), is published by Ridolfi et al. (2025). • Collareta et al. (2025) report the discovery of fused dentaries of an
ocean sunfish from the Lower Pliocene strata of the Siena-Radicofani Basin (Italy), representing the first finding of fossil material of a member of this group in post-Miocene strata outside North America. • Přikryl et al. (2025) report the presence of fossil material of an indeterminate
goby and members of the genera
Herklotsichthys and
Ophisternon in the
Pleistocene Laguna Formation (
Philippines). • Dalla Vecchia et al. (2025) report the discovery of a new assemblage of Late Cretaceous (possibly Campanian-Maastrichtian) fishes from the Friuli Carbonate Platform (
Italy), dominated by pycnodontiforms and
basal non-
acanthomorph teleosts. • Dubikovska et al. (2025) study the composition of the Miocene fish assemblage from the Mykolaiv Beds (
Ukraine), and report the first discovery of fossil material of
Acanthurus haueri,
Oligodiodon sp. and indeterminate
diodontids and
tetraodontiforms of uncertain familiar placement from the Forecarpathian Basin. • Evidence of changes of diversity of ray-finned fishes from the south of Eastern Europe (
Moldova,
Russia and
Ukraine) from the late Miocene to the late Pleistocene is presented by Barkaszi & Kovalchuk (2025). • Brinkman
et al (2025) document the paleoichthyofauna of the early
Maastrichtian-aged
Prince Creek Formation of Alaska, including the descriptions of new genera (
Nunikuluk,
Archaeosiilik,
Sivulliusalmo), the first documentation of several previously-described taxa (
Oldmanesox,
Horseshoeichthys) within the formation, and the oldest known fossil record of
Cypriniformes. • A study on changes of diversity of bony fishes in
Chile from the Neogene to the present is published by Oyanadel-Urbina et al. (2025). ==Lobe-finned fishes==